摘要:
Organic electrolyte solutions and lithium batteries using the same are provided. The organic electrolyte solutions use a silane compound that prevents crack formation caused by volumetric changes in the anode active material during battery charging/discharging. This improves charge/discharge characteristics, thereby also improving stability, reliability, and charge/discharge efficiency of the battery.
摘要:
An organic electrolyte solution and a lithium battery using the same are provided. The organic electrolyte solution uses a monomer compound which can be electrografted, and which prevents crack formation caused by volumetric changes in the anode active material during battery charging/discharging. This improves charge/discharge characteristics, thereby improving the stability, reliability, and charge/discharge efficiency of the battery.
摘要:
Organic electrolyte solutions and lithium batteries using the same are provided. The organic electrolyte solutions use a silane compound that prevents crack formation caused by volumetric changes in the anode active material during battery charging/discharging. This improves charge/discharge characteristics, thereby also improving stability, reliability, and charge/discharge efficiency of the battery.
摘要:
An organic electrolyte solution and a lithium battery using the same are provided. The organic electrolyte solution uses a monomer compound which can be electrografted, and which prevents crack formation caused by volumetric changes in the anode active material during battery charging/discharging. This improves charge/discharge characteristics, thereby improving the stability, reliability, and charge/discharge efficiency of the battery.
摘要:
A solid acid including a carbon nano tube (CNT), a spacer group combined with the CNT and an ionically conductive functional group connected to the spacer group. A polymer electrolyte membrane may include the same composition, and may be used in a fuel cell. The polymer electrolyte membrane using the solid acid has excellent ionic conductivity and suppresses the cross-over of methanol. The polymer electrolyte membrane is used as an electrolyte membrane of a fuel cell, for example, a direct methanol fuel cell.
摘要:
A solid acid including a carbon nanotube (CNT), a spacer group combined with the CNT and an ionically conductive functional group connected to the spacer group. A polymer electrolyte membrane may include the same composition, and may be used in a fuel cell. The polymer electrolyte membrane using the solid acid has excellent ionic conductivity and suppresses the cross-over of methanol. The polymer electrolyte membrane is used as an electrolyte membrane of a fuel cell, for example, a direct methanol fuel cell.
摘要:
A polymer membrane, a method of preparing the same, and a fuel cell employing the same are provided, where the polymer membrane includes a porous polymer film having sulfonated pores. The polymer membrane can be prepared easily and economically, has excellent ionic conductivity, and effectively reduces crossover in a fuel cell.
摘要:
Provided are a porous anode active material, a method of preparing the same, and an anode and a lithium battery employing the same. The porous anode active material includes fine particles of metallic substance capable of forming a lithium alloy; a crystalline carboneous substance; and a porous carboneous material coating and attaching to the fine particles of metallic substance and the crystalline carboneous substance, the porous anode active material having pores exhibiting a bimodal size distribution with two pore diameter peaks as measured by a Barrett-Joyner-Halenda (BJH) pore size distribution from a nitrogen adsorption. The porous anode active material has the pores having a bimodal size distribution, and thus may efficiently remove a stress occurring due to a difference of expansion between a carboneous material and a metallic active material during charging and discharging. Further, the anode electrode and the lithium battery comprising the anode active material have excellent charge/discharge characteristics.
摘要:
A polymer electrolyte membrane, a method of manufacturing the same, and a fuel cell including the polymer electrolyte membrane are provided, wherein the polymer electrolyte forms an interpenetrating polymer network (IPN) of a polymer by simple blending of a hydrophobic polyimide having a reactive terminal group and a hydrophilic aromatic polymer having ion conductivity. The polymer electrolyte membrane has reduced swelling properties due to highly dense crosslinking of polyimide through the reactive terminal group, shows high ion conductivity at low humidity, and has methanol crossover suppressing ability. Accordingly, a fuel cell with improved electric and mechanical properties can be provided.
摘要:
A polymer electrolyte membrane including a polysilsesquioxane group-containing copolymer and an ionic conductive polymer is provided. A method of preparing the polymer electrolyte membrane and a fuel cell including the polymer electrolyte membrane is also provided. The polymer electrolyte membrane has improved ion conductivity and an improved ability to suppress methanol crossover, and therefore can be used as an electrolyte membrane for a fuel cell, including a direct methanol fuel cell.